Polycystic renal disease presenting as medullary sponge kidney.
D006801:Humans; D008297:Male; D007691:Medullary Sponge Kidney / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology; D008875:Middle Aged; D007690:Polycystic Kidney Diseases / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology; D011859:Radiography